Mixed

Age-related physiological changes in the gastrointestinal tract, including reduced immune function and dietary shifts, lead to a restructuring of the gut microbiota (dysbiosis) characterized by a decrease in beneficial bacteria (e.g., Faecalibacterium prausnitzii, Clostridium cluster XIVa) and an increase in facultative anaerobes (pathobionts), which is associated with frailty and inflammation.

As you age, your gut bacteria naturally shift, often losing beneficial types and gaining inflammatory ones. This isn't just bad luck; it's linked to how you eat and your immune health. To counter this, focus on high-fiber diets (fruits, vegetables, whole grains) and consider probiotics/prebiotics specifically designed for older adults, as these can help maintain a healthier microbial balance and reduce inflammation.